The term FAST STEED is composed of two words, the first being 'FAST' and the second being 'STEED'. The crossword solution for the first word is 'ARAB', which is a four-letter word. The term 'ARAB' is used to refer to people who are native to the Middle East and North Africa, as well as their descendants. This term is also used to describe the language spoken by these people, which is known as Arabic. Therefore, the term FAST STEED can be interpreted as a FAST horse from the Middle East or North Africa.